CVE-2021-26619 : Exploit Details and Defense Strategies

A path traversal vulnerability leading to deleting arbitrary files was discovered in BigFileAgent, a product of Bluetree Co., Ltd. Remote attackers can exploit this vulnerability to delete files of an unspecified number of users.

Understanding CVE-2021-26619

This section provides insights into the CVE-2021-26619 vulnerability affecting BigFileAgent.

What is CVE-2021-26619?

CVE-2021-26619 refers to a path traversal vulnerability in BigFileAgent that enables attackers to delete arbitrary files belonging to multiple users without proper authorization.

The Impact of CVE-2021-26619

The impact of this vulnerability is considered high as it allows remote attackers to compromise the integrity of the affected systems by deleting important files.

Technical Details of CVE-2021-26619

In this section, we delve into the technical aspects of the CVE-2021-26619 vulnerability.

Vulnerability Description

The vulnerability arises from improper limitation of pathname leading to unauthorized deletion of files in the BigFileAgent application.

Affected Systems and Versions

BigFileAgent version 1.0.1.7 and below on the Windows platform are vulnerable to this exploit.

Exploitation Mechanism

Remote attackers can exploit this vulnerability locally, without the need for special privileges, making it a critical security concern.

Mitigation and Prevention

To secure systems against CVE-2021-26619, immediate action and long-term security practices are essential.

Immediate Steps to Take

Update BigFileAgent to the latest version to patch the vulnerability.
Implement access controls to restrict unauthorized file deletions.

Long-Term Security Practices

Regularly monitor and audit file access and modifications.
Conduct security training to educate users on best practices to prevent file deletion attacks.

Patching and Updates

Stay informed about security updates and promptly apply patches to mitigate known vulnerabilities.